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author | David S. Miller <davem@davemloft.net> | 2009-06-15 03:02:23 -0700 |
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committer | David S. Miller <davem@davemloft.net> | 2009-06-15 03:02:23 -0700 |
commit | 9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb (patch) | |
tree | 8d104ec2a459346b99413b0b77421ca7b9936c1a /arch/arm/plat-s3c/include/plat/watchdog-reset.h | |
parent | ca44d6e60f9de26281fda203f58b570e1748c015 (diff) | |
parent | 45e3e1935e2857c54783291107d33323b3ef33c8 (diff) | |
download | talos-op-linux-9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb.tar.gz talos-op-linux-9cbc1cb8cd46ce1f7645b9de249b2ce8460129bb.zip |
Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/torvalds/linux-2.6
Conflicts:
Documentation/feature-removal-schedule.txt
drivers/scsi/fcoe/fcoe.c
net/core/drop_monitor.c
net/core/net-traces.c
Diffstat (limited to 'arch/arm/plat-s3c/include/plat/watchdog-reset.h')
-rw-r--r-- | arch/arm/plat-s3c/include/plat/watchdog-reset.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/arch/arm/plat-s3c/include/plat/watchdog-reset.h b/arch/arm/plat-s3c/include/plat/watchdog-reset.h new file mode 100644 index 000000000000..54b762acb5a0 --- /dev/null +++ b/arch/arm/plat-s3c/include/plat/watchdog-reset.h @@ -0,0 +1,49 @@ +/* arch/arm/plat-s3c/include/plat/watchdog-reset.h + * + * Copyright (c) 2008 Simtec Electronics + * Ben Dooks <ben@simtec.co.uk> + * + * S3C2410 - System define for arch_reset() function + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. +*/ + +#include <plat/regs-watchdog.h> +#include <mach/map.h> + +#include <linux/clk.h> +#include <linux/err.h> +#include <linux/io.h> + +static inline void arch_wdt_reset(void) +{ + struct clk *wdtclk; + + printk("arch_reset: attempting watchdog reset\n"); + + __raw_writel(0, S3C2410_WTCON); /* disable watchdog, to be safe */ + + wdtclk = clk_get(NULL, "watchdog"); + if (!IS_ERR(wdtclk)) { + clk_enable(wdtclk); + } else + printk(KERN_WARNING "%s: warning: cannot get watchdog clock\n", __func__); + + /* put initial values into count and data */ + __raw_writel(0x80, S3C2410_WTCNT); + __raw_writel(0x80, S3C2410_WTDAT); + + /* set the watchdog to go and reset... */ + __raw_writel(S3C2410_WTCON_ENABLE|S3C2410_WTCON_DIV16|S3C2410_WTCON_RSTEN | + S3C2410_WTCON_PRESCALE(0x20), S3C2410_WTCON); + + /* wait for reset to assert... */ + mdelay(500); + + printk(KERN_ERR "Watchdog reset failed to assert reset\n"); + + /* delay to allow the serial port to show the message */ + mdelay(50); +} |